. >> just how hard will it be to pass any kind of federal gun control law? a lesson in the power of the nra at the cdc. >> a seismic shift in the golden state and we aren't talking earthquakes, how the face of california is changing again. ,,,,,,,,,, last summer -- has re-opene screening for the lastest ht >>> the colorado movie theater that was the scene of a mass shooting last summer has reopened. a screening of the latest hobbit movie was shown tonight following a somber remembrance ceremony. last july 12 people were killed and dozens more wounded during a screening of the midnight batman movie. >>> cbs news reporter mark straussman explains our next story. >> there is absolutely no question, these are preventible deaths. >> reporter: dr. mark rosenberg used to oversee research into gun violence and prevention at the centers for disease control. in 1996 the nra successfully lobbied congress to put this restriction into the cdc's budget. none of the funds made available may be used to advocate or promote gun control. >> these were shots fired across the bo